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inet: constify ip headers and in6_addr

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Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers
where possible, to make code intention more obvious.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2011-04-22 04:53:02 +00:00 • committed by David S. Miller
parent 5f8629c526
commit b71d1d426d
64 changed files with 316 additions and 310 deletions
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8
net/ipv4/tcp_ipv4.c
View file

@ -279,7 +279,7 @@ EXPORT_SYMBOL(tcp_v4_connect);
/*
* This routine does path mtu discovery as defined in RFC1191.
*/
static void do_pmtu_discovery(struct sock *sk, struct iphdr *iph, u32 mtu)
static void do_pmtu_discovery(struct sock *sk, const struct iphdr *iph, u32 mtu)
{
struct dst_entry *dst;
struct inet_sock *inet = inet_sk(sk);
@ -341,7 +341,7 @@ static void do_pmtu_discovery(struct sock *sk, struct iphdr *iph, u32 mtu)
void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
{
struct iphdr *iph = (struct iphdr *)icmp_skb->data;
const struct iphdr *iph = (const struct iphdr *)icmp_skb->data;
struct tcphdr *th = (struct tcphdr *)(icmp_skb->data + (iph->ihl << 2));
struct inet_connection_sock *icsk;
struct tcp_sock *tp;
@ -2527,7 +2527,7 @@ void tcp4_proc_exit(void)
struct sk_buff **tcp4_gro_receive(struct sk_buff **head, struct sk_buff *skb)
{
struct iphdr *iph = skb_gro_network_header(skb);
const struct iphdr *iph = skb_gro_network_header(skb);
switch (skb->ip_summed) {
case CHECKSUM_COMPLETE:
@ -2548,7 +2548,7 @@ struct sk_buff **tcp4_gro_receive(struct sk_buff **head, struct sk_buff *skb)
int tcp4_gro_complete(struct sk_buff *skb)
{
struct iphdr *iph = ip_hdr(skb);
const struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th = tcp_hdr(skb);
th->check = ~tcp_v4_check(skb->len - skb_transport_offset(skb),